Code gives runtime error,can't find any such test cases

#1

https://ide.codingblocks.com/s/292098,passes 8/10 test cases can’t find any string which gives a runtime error

#2

** 6/8 test cases. Made a typo mistake in the earlier doubt.

#3

Question has been solved,but can anyone please show any mistake which can generate any error. Thanks for your time.

#4

@Arpan_Goswami use long long instead of int since the size of string is upto 17

#5

I have used a macro in the code:
#define int long long

which takes care of overflows,in case it happens,do go through it once again

#6

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